Appendix A. Object Hierarchy

    GObject
        BtApplication
        BtSettings
            BtGConfSettings
            BtPlainfileSettings
        BtMachine
            BtProcessorMachine
            BtSinkMachine
            BtSourceMachine
        BtPattern
        BtSequence
        BtSetup
        BtSong
        BtSongInfo
        BtSongIO
            BtSongIONative
                BtSongIONativeBZT
                BtSongIONativeXML
        BtWave
        BtWavelevel
        BtWavetable
        BtWire
        BtWirePattern